I design data systems that amplify decision-making without breaking budgets or requiring black boxes. Most recently at TalkingPoints, where I spent four years building data infrastructure, analytics, and AI systems. Now developing Relod as an operations co-pilot for small businesses, and publishing lessons learned at tacosdedatos.
This week: A pivotal week of career transition and agent-native architecture. The real lesson: take thorough notes while you work—modern tools let you capture years of context in an hour and repurpose it for portfolios, resumes, and tailored applications. Meanwhile, been evaluating my tools through an agent-native lens: fieldnotes and inkwell-cli were already 70-80% there from AI-native thinking, but that final push makes them dramatically easier to extend. Also hardening parallel-learn's React for the February launch of "Storytelling con Datos."
Senior Data Engineer — EdTech platform connecting millions of multilingual families with schools
Modernized data stack, cut costs 70%
read more →Built BI for 200+ districts
read more →API for attendance product
read more →Connected Salesforce, PlanHat+
read more →Quantified attendance impact
read more →Evaluation systems at scale
read more →ESP32 sensors + consumption forecasting for food businesses. Know when to reorder before you run out. Currently piloting with San Francisco/Berkeley cafés and bars. The physics are simple (distance sensors); the behavioral patterns are not. Accepted to Founders Inc.
Spanish-language newsletter and community focused on AI and data. 20K+ followers, 1100+ active members. Weekly posts on AI Ops, practical implementations, and emerging tools for the Latin American tech community. Building accessible technical content where language isn't a barrier.
A frictionless journaling system for capturing insights. Kishmish: headless Raspberry Pi running on-device AI for voice transcription, entity extraction, and intent analysis. No screen to distract, works offline-first. Amoxcalli: companion app that highlights patterns and connections across entries. Currently testing v0.4 hardware with PiSugar battery.
AI-powered lesson design workbench where educators assemble lesson blocks with persona vibes, tone/time/materials tags, and post-lesson reflections. Draggable flow interface with suggestion column and component remix capabilities.
Agentic career development system that lives in your terminal. Tracks progress through git commits, provides daily check-ins, and delivers personalized coaching both locally and via ChatGPT integration. Command-line tool for continuous professional growth tracking.
I'm a data engineer who builds systems that help people make better decisions. At TalkingPoints, I built infrastructure that processed billions of messages between families and schools, making multilingual communication seamless. Now I'm working on Relod—an AI-native intelligent monitoring system for inventory that gives small businesses their own chief of operations. I'm experimenting with other AI-native approaches too, like Fieldnotes for lesson generation, and exploring where software and hardware converge with Kishmish—a personal journaling device that keeps your thoughts private and offline while still giving you an AI assistant when you need one.
I write about data engineering and AI operations in Spanish through tacosdedatos, sharing practical templates and reflecting on how AI reshapes our work as builders. I believe AI should extend human judgment, not replace it—everything I build is about amplifying our natural capabilities rather than automating them away.
My north star is simple: amplify people's agency, especially for communities that have been historically underserved. Whether it's helping educators reach multilingual families, enabling small businesses with better operations, or making technical knowledge accessible beyond English borders, I focus on shipping small, useful things that solve real problems. I believe cost-effectiveness is the real test of any solution—throwing money at a problem doesn't make it better, just more expensive. If you value pragmatic approaches, transparent systems, and tools that empower rather than restrict, we'll probably work well together.
Optimistic realism—progress in small slices
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Automatic with override
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Personalized with consent > generic for everyone
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Tools augment, not replace
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Sustainability matters
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Empowering over restricting
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Access means everyone.
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Diagnose with data, treat with design
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Great design is felt
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Research × Data × Product × Design × AI. Open to collaborations, speaking opportunities (EN/ES), and conversations about what's next.
Or reach out directly: sergio@cimarron.io